@SchultzD Oh my bad, let's drop a nuke on Tomura, nevermind it being in the literal centre of the &*@#ing mainland, thereby dooming pretty much the whole nation in the worst case scenario, and in the best case scenario dooming any civilians and heroes that are within both the blast radius and range of the radiation while also creating a radioactive zone for the next several decades. And that's on top of the fact literally no one knew he was getting All For One or even upgraded his Decay, thereby becoming a literal walking catastrophe.
And did you forget All Might was the #1 hero, and he doesn't nearly have that much power? Or maybe you're assuming nations wouldn't come to an agreement on not having Quirks be used in wars with how destructive and chaotic they can be on the battlefield.
@shoker Chapter 210 and 211 is when Deku first got Blackwhip. 214 and 215 is when he first uses it immediately after, and he only managed to summon it for a second. It's not too far-fetched to think he managed to summon it again so quickly and without any collateral because of his past experiences with OFA already and it having already awakened and let out all the pressure that was built up.
And you're assuming he's A, perfectly controlling it; and B, just awakened it. Either one of these is a detrimental factor to what we saw. Overall, you're just being impatient and casting your presumptions when you haven't even seen the full picture.